Shock-absorber for tungsten-lamps.



F. SCHWARTZ (Sz L. KLEINMANN.

SHOCK ABSORBER POR TUNGSTEN' LAMPS.

APPLICATION FILED MAY G, 1909.

Patented. May 3, 1910.

operate. to prevent the t UNITED STATES l); TENT @Falli ell@ FREDERICKSCHWARTZ AND LEO KLEINMANN, OF NEW YORK, N. Y.,

ASSIGNORS TO SHAPIRO & ARONSON, 0F BROOKLYN, NEW YORK, A FIRM.

Specication of letters Patent.

Patented may s? wie,

Application tiled May 6, 1909`. `Seria1 No. L194212.

'l'o all whom it may concern:

Be it known that we, lfm-:meinen HenwAn'rz and Liao Kiiiiixnlxxx, botheitizens of the@ United States? and residents of the New York. boroughof Brooklyn, in the county of Kings and State of .New York, haveinvented a new and Improved Sheet(- Absorber .tor Tungsten-lnunps, ofwhich the following is a full, clear. and exact description..

This invention relates to hangers for lamps, and it is partieularlyuseful in eonneetion with eleetrie lamps such as tung sten lamps havingfragile tilaments.

- The Object ot' the invention to provide a lamp hanger` having a shockabsorbing device for supporting the lamp` whieh .will ransmission ot' ajar or shock to the lamp, whieh might be otherwise transmitted from theceiling or -wall.

The, invention consists in the eo'nstruetion and eonibii'iation of.parts to be more t'ully described hereiua't'teizand pm'tiieularlyV sett'orth in the claims. Y

Reference is to be had to the aeeompany ing drawings tornxinga part ofthis sperilieation, in which similar eharaeters ot referenee indieateeorresponding parts; in both the. figures. I y

Figure t is a perspeetive showing a lamp having a hanger provided with ashoeh ab` sorbet' eonstrueted aeeording to our in\ention.: and Fig. i?is a vertieal ventral sei-tion through our shoel absorber.

,Reterriugimore partieularlv to the parts, l represents the lower end otthe fixture from 'whieli the lamp Q hung. ln applying our invention.between the fixture and the lamp we secure our shoehr absorber i lhelower end of the shoelc absorberis provided with a tubular nipplet,whit-h 4is internally threaded. and whieh is attaehed to a `th`readednipple f whieh projeets up from the lamp soeket ti. threaded nipple 7,siniilar to the nipple 'l is provided at the,

- upper end ot the shot-l; absorber, and this nipple enables thedevil-e, to be aitaehed to the lower end ot' the fixture.

The details ot' the eonstriution of the shock absorber will now bedeseri-hed:` 'lho nipples 4 and 7 are enlargel at their outer ends sodas to torni heads, and present annular shoulders S. The inner `portionsof the nipples t. are` formed into reduced necks 9 eity of I i I I I I II I I l I I l which are formed with external screw threads '10. Theseneeks 9 extend through openings .torined at diametrieally oppositepoints in two shells 1l and l). These Shells are of hemispherieal form,as shown, and the edges of the openings through them seat upon theshoulders nl, as indicated. The shells 11 and l2 have teleseoping edgesand the edge of the shell Ztl -istbent outwardly so as to form a lip13';y whereas the edge of the shell 1Q is blut 'i rwardly so as to form6 a lip l-l. The shells' t neatltT together, but f are. movable withrespeet to each other. The two shells are held together by means of aeoil spring` 15. This spring is in the 'form of a helixthaving anexpanded or enlarged bodyv portion disposed between the nipplesland l"and having redueed sleeves 1G at its ends which are ofl substantiall)vthe saine diameter as that of the reeks tl, '.lhe helix is ofthe saineeharaeter as the threads on the necks t), that fis. it the threads areright-hiatul` they helix is also ri; ;'ht-hand. The sleeves 16 arefastened `to the nipples t and 7 by serewing the?threaded necks of theynipples into the sleeves t6 so that the L eoils 'ot' the helix disposethemselves in the spaee between the threads. as indieated most elearlyiu VFig. 2. lhe nipples 4 and '4" are tubular. as ndieatedn so that aueleetrie eord ll ma)v pass down through the hanger to the lamp bulb.

'llhe presenee of the spring 'l5 permits n rolling` movement otl the.lower shell mathe upper shell. and at the samey time gives a desirableresilieuev. so that a shock or j ar eondueted along the lixt'ure l willbe absorbed and not transmitted to the lampi lt: lshould be evident fromau inspection of Fig. '2 that a jar or shock passing in a ver tieuldireetion will be absorbed? auch turthermorevif the lamp should hestruck it eau ineline iu the direet'ion in whieh the. fol-ee tends tomore itv` whieh will prevent injur)Y to the filament. lt should beunderstood that the spring is normall)Y not under tension, that it is ina`relaxed condition.

llaving thus described our invention, we elaiin as new and desire toseeure by Letters .Patent,-YH

Al. A shock absorber Ytor a lamp hanger, eomprising 'a pair of shellsharing their edges overlapping and adapted to rock one upon the otherrsaid shells forming a closed chamber and s tension spring extending lse'ross said chamber, connecting said shells end adapted to absorb eshock.

2. A shook absorber for s lamp hanger, consisting of a pair of curvedshells telescoping atther edges, .forming s closed chamber, and atenslonspring attached to the'inner side of said shells at substantiallydemetreally opposite points and exendlng across said. chamber, saidspring affording means for holding said shells tog-einer and permittinga rocking movement of said shells with respect to eseh other.

3. A shock absorber for a lamp henger, consisting of n pair of curvedshells telescop'ng at their edves, nipples mourned n seid shellsdimnetrreslly opposite to esch other and adapted so attach the shockebsor'ber in poslton, and s spring connecting seid nipples and holdingsaid shells to- Q0 gether. et. A shock absorber for a lmnp hanger,consisting of a pair of oppostely disposed ubsanally hemispherlealshells telescopst their edges, nipples mounted in said shellsdsrnetreslly opposite to euch other and having threaded necks projectingn- Ward, and :L coil spring engaging the threads of said necks andholdingsaid shells together.

In testimony whereof We have signedour names to this speeieeton in thepresence of two snhserhn T Witnesses.

TEREAERCK" SCIDVAR'IZ. LEO KLENMANN. litnesses:

l". l). AMMEN, PHILH) D. RoLLHAUs.

